This study investigates spatiotemporal changes in air pollution (particulate as well gases) during the COVID-19 lockdown period over major cities of Bangladesh. The investigated aerosol optical depth (AOD) from Moderate Resolution Imaging Spectroradiometer (MODIS) onboard Terra and Aqua satellites, PM2.5 PM10 Copernicus Atmosphere Monitoring Service (CAMS), NO2 O3 TROPOMI-5P, March to June 2019...

The COVID-19 lockdown restrictions influenced global atmospheric aerosols. We report aerosol variations over India using multiple remote sensing datasets [Moderate Resolution Imaging Spectroradiometer (MODIS), Ozone Monitoring Instrument (OMI), Cloud-Aerosol Lidar, and Infrared Pathfinder (CALIPSO)], model reanalysis [Copernicus Atmosphere Service (CAMS)] during the implemented pandemic outbrea...

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a r t i c l e i n f o The lidar and radar profiling capabilities of the CloudSat and Cloud-Aerosol Lidar and Infrared Pathfinder (CALIPSO) satellites provide opportunities to improve the characterization of cloud properties. An Arctic cloud climatology based on their observations may be fundamentally different from earlier Arctic cloud climatologies based on passive satellite observations, whic...

Abstract. Cloud macrophysics schemes are unique parameterizations for general circulation models. We propose an approach based on a probability density function (PDF) that utilizes cloud condensates and saturation ratios to replace the assumption of critical relative humidity (RH). test this approach, called Global Forecast System (GFS) – Taiwan Earth Model (TaiESM) Sundqvist (GTS) scheme, usin...

Lidar offers a plethora of information on atmospheric aerosols and chemical constituents. However, lidar systems typically work in vacuums, applied to specific applications, such as validation efforts, and with little collaboration with other institutions. In order to alleviate these limitations, the Hampton University (HU) lidar has made steps to join the CREST Lidar Network (originally the RE...